Home / 1,109,137.80-1,663,701.30-434,742.60

Finding the Fourth Proportional to 1,109,137.80, 1,663,701.30 and 434,742.60

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Solution

The fourth proportional to 1,109,137.80, 1,663,701.30 and 434,742.60 is: 652,111.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,137.80 : 1,663,701.30 = 434,742.60 : x
  2. Step 2: Convert to fraction form
    1,109,137.80/1,663,701.30 = 434,742.60/x
  3. Step 3: Cross multiply
    1,109,137.80x = 1,663,701.30 × 434,742.60
  4. Step 4: Simplify right side
    1,109,137.80x = 723,281,828,785.38
  5. Step 5: Solve for x
    x = 723,281,828,785.38/1,109,137.80
  6. Step 6: Final answer
    x = 652,111.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.